Concerns over their injured trio of Mike Tindall, Anthony Allen and Akapusi Qera have eased and all three are included.
Tindall limped out of the win over Bath with an ankle injury, while Allen and Qera have both recovered from shoulder complaints in time to take their place in the side.
"In a defensive performance of last weekend's quality and intensity there were always going to be question marks over individuals, but we are very pleased everyone has come through," said head coach Dean Ryan.
"Leicester are an outstanding side because they have been in this situation many times before and it will be nothing new to them. But we are in a confident frame of mind, given the form and results we have produced in the last few weeks.
The only change in the 22-man squad that beat Bath is on the bench as Jack Forster comes into the squad in place of Alasdair Dickinson.
Gloucester (v Leicester Tigers, at Kingsholm, Sunday 4.30pm)
15 Iain Balshaw
14 James Simpson-Daniel
13 Mike Tindall
12 Anthony Allen
11 Lesley Vainikolo
10 Ryan Lamb
9 Rory Lawson
1 Nick Wood
2 Andy Titterrell
3 Carlos Nieto
4 Marco Bortolami (c)
5 Alex Brown
6 Alasdair Strokosch
7 Akapusi Qera
8 Gareth Delve
Replacements
16 Olivier Azam
17 Jack Forster
18 Will James
19 Luke Narraway
20 Gareth Cooper
21 Willie Walker
22 Mark Foster
